CVE-2022-38153 — Allocation of Resources Without Limits or Throttling in Wolfssl
Severity
5.9MEDIUMNVD
EPSS
0.6%
top 31.43%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 31
Latest updateJan 12
Description
An issue was discovered in wolfSSL before 5.5.0 (when --enable-session-ticket is used); however, only version 5.3.0 is exploitable. Man-in-the-middle attackers or a malicious server can crash TLS 1.2 clients during a handshake. If an attacker injects a large ticket (more than 256 bytes) into a NewSessionTicket message in a TLS 1.2 handshake, and the client has a non-empty session cache, the session cache frees a pointer that points to unallocated memory, causing the client to crash with a "free(…
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6